Surah Al-Anbya — Ayah 5 (21:5)
بَلۡ قَالُوٓاْ أَضۡغَٰثُ أَحۡلَٰمِۭ بَلِ ٱفۡتَرَىٰهُ بَلۡ هُوَ شَاعِرٞ فَلۡيَأۡتِنَا بِـَٔايَةٖ كَمَآ أُرۡسِلَ ٱلۡأَوَّلُونَ ٥
English translation (Saheeh International)
But they say, "[The revelation is but] a mixture of false dreams; rather, he has invented it; rather, he is a poet. So let him bring us a sign just as the previous [messengers] were sent [with miracles]."
Brief commentary
But they were unsure of what Muhammad (peace be upon him) brought. At times they said: “Confused dreams which have no meaning”. And at times they said: “No, but in fact he made it up without any basis”. And sometimes they said: “He is a magician. If he is true in his claim, he should bring us a miracle like the former messengers, as they brought miracles like the staff of Moses and the camel of Salih”.